Home / 28,922.84-39,902.46-21,387.32

Finding the Fourth Proportional to 28,922.84, 39,902.46 and 21,387.32

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Solution

The fourth proportional to 28,922.84, 39,902.46 and 21,387.32 is: 29,506.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,922.84 : 39,902.46 = 21,387.32 : x
  2. Step 2: Convert to fraction form
    28,922.84/39,902.46 = 21,387.32/x
  3. Step 3: Cross multiply
    28,922.84x = 39,902.46 × 21,387.32
  4. Step 4: Simplify right side
    28,922.84x = 853,406,680.81
  5. Step 5: Solve for x
    x = 853,406,680.81/28,922.84
  6. Step 6: Final answer
    x = 29,506.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.